Azure DevOps SSH release pipeline task and Docker Compose STDERR

Question

I am using Classic release pipelines in Azure DevOps and configured simple SSH task what calls docker-compose:

cd /home/asem/platform/$(ServiceName) && sudo docker-compose up -d --force-recreate

Issue: task fails with errors:

Docker-compose returns 0 exit code, but write some messages in STDERR. Pipeline task treat them as errors and fails.

Questions:

1. Why docker-compose designed that way what EXIT code = 0, but there are some errors were written in STDERR ?
2. Any good solution (please see found workarounds in my answer below) ?

Answer 1

Workaround 1: pipe docker compose STDERR to STDOUT like cd /home/asem/platform/$(ServiceName) && sudo docker-compose up -d --force-recreate 2 >&1

sudo docker-compose up -d --force-recreate 2 >&1

That works, but I don’t like it because it can hide some real errors

Workaround 2: Uncheck “Fail on STDERR” for task

That works, but release stage displays errors which is not good though.

Answer 2

Will a stderr redirect + grep work for you?

docker compose up -d 2> >(grep -i error)

Happy path:

With error: